NEAR-INFRARED MEASUREMENT OF SURFACE MOISTURE ON POROUS MATERIALS

被引：1

作者：

Gong, L. ^{[1
]}

Plumb, O. A. ^{[1
]}

Lee, W. C. ^{[1
]}

机构：

[1] Washington State Univ, Dept Mech & Mat Engn, Pullman, WA 99164 USA

来源：

EXPERIMENTAL HEAT TRANSFER | 1993年 / 6卷 / 03期

关键词：

D O I：

10.1080/08916159308946461

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

An instrument using the near-infrared reflectance technique was designed 10 measure surface moisture on porous materials. The basic instrument design consists of a radiation source, a lens system, narrow-band interference filters, a detector, and a data acquisition system. The instrument junction, operation, and calibration are discussed in detail. The modified Kubelka-Munk junction is used for the data transformation. The experimental data from glass beads of 65, 120, and 450 mu m in diameter show that a two-point linear model can be utilized for calibration. The instrument uncertainty is estimated to be less than +/- 6.2%.

引用

页码：299 / 314

页数：16

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